Anti-surge control method of blast furnace blower
An anti-surge and blower technology, which is applied in pump control, mechanical equipment, machines/engines, etc., can solve the problems of wasting energy and failure to guarantee fans, etc., to eliminate pressure fluctuations and energy waste, and eliminate anti-surge curve deviation Effect
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[0028] figure 1 Schematic representation of blast furnace blower operation. The blower is driven by an electric motor or a steam turbine. When in normal operation, the blower is in a safe area, the anti-surge valve is fully closed, and all the air enters the hot blast stove for heating. As the blower approaches the anti-surge curve, the anti-surge valve opens, venting air into the atmosphere, allowing the blower to increase its flow rate away from the anti-surge curve.
[0029] figure 2 is the dimensionless blast furnace blower anti-surge curve. Where p2 / p1 is the blast furnace blower compression ratio, for similar speeds, is a dimensionless flow. It can be seen from the figure that when the dimensionless calculation is adopted, the anti-surge curve does not change with the intake conditions.
[0030] image 3 The dimensionless flow representing the operating point is , the dimensionless flow at the anti-surge point is q s , so the distance between the actual ope...
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